首页
登录
注册
电子激励表面等离极化激元的粒子模拟
Particle-in-cell simulation of electron-excited surface plasmon polaritons
-
摘要: 采用极化电流微分方程,对贵金属中自由电子与外电场的共振过程进行描述.将该微分方程与麦克斯韦方程相结合,运用时域有限差分(FDTD)方法,在粒子 PIC 模拟软件 CHIPIC3D 的基础上,实现了电子激励表面等离极化激元(SPPs)的模拟.通过对100 keV电子平行于银薄膜表面运动、激励起表面等离极化激元的模拟,观测并分析了 SPPs的场强及模式在银薄膜表面的分布,并验证了模拟结果的正确性.Abstract: The resonance process of free electrons and external electric fields in noble metal (Ag)is described by using the polarization current difference equation.The difference equation is combined with the Maxwell equation.The finite-difference time-domain (FDTD)method is used.Based on the particle-in-cell (PIC)simulation software CHIPIC3D,the PIC simulation of the electron-excited surface plasmon polaritons (SPPs)is realized.Through simulating the SPPs excited by 100 keV electrons moving parallel to the surface of silver films,the field strength and mode of SPPs are observed and analyzed,and the simulation results are verified.
-
-
计量
- 文章访问数: 227
- HTML全文浏览数: 183
- PDF下载数: 6
- 施引文献: 0
下载: